The **MHO322FCG-R** is a specific part number belonging to the **MHO Series** of high-stability quartz crystal oscillators, typically manufactured by companies like **Mercury Electronic**. Below is a detailed technical breakdown of its electronic characteristics and specifications. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its operating parameters. | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | Fixed frequency output | | **Output Type** | CMOS / TTL | Square wave logic levels | | **Supply Voltage (Vdd)** | 3.3V / 5.0V | Dependent on specific sub-series (usually 3.3V) | | **Package Size** | 14-pin DIP (Full Size) | Metal can through-hole package | | **Frequency Stability** | ±25ppm to ±100ppm | Varies by grade; "C" usually denotes ±50ppm | | **Operating Temp** | -10°C to +70°C | Standard commercial temperature range | | **Termination** | RoHS Compliant | Lead-free finish | --- ### 2. Physical Characteristics The "MHO" designation refers to the physical "Metal Half-size" or "Full-size" DIP package. * **Construction:** Hermetically sealed metal case to reduce Electromagnetic Interference (EMI). * **Pin Configuration (Standard 14-pin DIP footprint):** * **Pin 1:** NC (No Connection) or Tri-state Control. * **Pin 7:** Ground (Case). * **Pin 8:** Output (Frequency). * **Pin 14:** Supply Voltage (Vcc). --- ### 3. Key Features * **Tri-state Function:** Allows the output to be disabled (high impedance), which is useful for testing or power-saving modes. * **Low Jitter:** Designed for clocking microprocessors and digital circuits where timing precision is critical. * **Durability:** The metal casing provides physical protection and excellent grounding properties. --- ### 4. Applications The MHO322 series is commonly found in legacy and industrial equipment due to its through-hole (DIP) form factor: 1. **Industrial Controllers:** PLC units and automation hardware. 2. **Networking:** Older routers, switches, and modems. 3. **Embedded Systems:** Microcontroller clock sources. 4. **Test Equipment:** Signal generators and frequency counters. --- ### 5. Part Number Decoding (Typical) | Prefix | Package | Voltage/Stability | Temperature | RoHS | | :--- | :--- | :--- | :--- | :--- | | **MHO** | **3** (Full Size) | **22** (3.3V / 50ppm) | **F** (-10 to 70°C) | **-R** (RoHS) |